Frost wands appear to have worked in Vanilla as the strategies at the time originally called for them and posts from thottbot 2006 are there on wowhead to back that up. Is this intended? Did you really want warlocks to either melee or sit on this fight?

We checked against our reference client and it confirmed what others are saying here: Frost wands are supposed to work, and we found the offending line of code (introduced in 2008!) and fixed it.

Thanks for helping us crush these bugs!
Sorry we missed it.
you all.